Signal transmission method and apparatus

ABSTRACT

Provided in embodiments of the present invention are a signal transmission method and an apparatus, the method comprising: a terminal device determining a resource pool transmitting a first signal according to a first numerology used to transmit the first signal; the terminal device using a transmission resource in the resource pool transmitting the first signal to transmit the first signal.

CROSS REFERENCE

The present application is a continuation of U.S. patent applicationSer. No. 16/310,242 filed on Dec. 14, 2018, which is a U.S. NationalStage Entry of International Application No. PCT/CN2016/099608, filed onSep. 21, 2016. The entire disclosures of the aforementioned applicationsare incorporated herein by reference.

TECHNICAL FIELD

The present disclosure relates to the field of communication, and inparticular, to a signal transmission method and apparatus in the fieldof communication.

BACKGROUND

In a future communication system, a contention-based uplink access modewill be introduced, and a specific resource pool is allocated for theterminal device, and the terminal device competes for resources in theresource pool in a competitive manner without network device schedulingto perform random access, or may also compete for resources in theresource pool in a competitive manner to transmit data.

It should be noted that the information disclosed in the backgroundsection above is only for enhancing the understanding of the backgroundof the present disclosure, and thus may include information that doesnot constitute prior art known to those of ordinary skill in the art.

SUMMARY

The present disclosure provides a signal transmission method andapparatus.

In a first aspect, a signal transmission method is provided, including:a terminal device determining a resource pool transmitting a firstsignal according to a first numerology used to transmit the firstsignal; the terminal device using a transmission resource in theresource pool transmitting the first signal to transmit the firstsignal.

In a first possible implementation manner of the first aspect, the firstnumerology and/or each of the at least one numerology includes at leastone of the following: a subcarrier spacing, an amount of subcarriersincluded in a system bandwidth, an amount of subcarriers included in aPhysical Resource Block PRB, a symbol length of Orthogonal FrequencyDivision Multiplexing OFDM, an amount of points of Fast FourierTransformation FFT or Inverse Fourier Transformation IFFT used togenerate OFDM signals, an amount of Orthogonal Frequency DivisionMultiplexing OFDM symbols included in a Transmission Time Interval TTI,an amount of TTIs included in a first time period, and a Cyclic PrefixCP type of the first signal, and a time length of the signal CP. Thesubcarrier spacing refers to a frequency interval of adjacentsubcarriers, for example, 15 kHz, 60 kHz, etc.; the number ofsubcarriers under a specific system bandwidth is, for example, thenumber of subcarriers corresponding to each possible system bandwidth;the number of subcarriers included in the PRB, for example, may betypically an integer multiple of 6 or 16; the number of OFDM symbolsincluded in the TTI may be, for example, typically an integer multipleof 2, 4, 7, or may also be an integer multiple of 14; the number of TTIsincluded in the first time period may refer to the number of TTIsincluded in the time length of 1 ms or 10 ms; the first signal CP typemay be that a cyclic prefix uses a regular CP or an extended CP; thetime length of CP of the first signal.

Optionally, the numerology may further include: a basic parameter in anewly defined resource partitioning manner in a future network system,which may be, for example, a basic frequency domain unit, a basicfrequency domain unit pattern, a subcarrier pattern, an occupiedposition of a reference symbol in a time domain unit, a TTI pattern inthe unit period, a pattern of the subframe in the frame, a pattern ofthe slot in the subframe, an OFDM pattern in the slot, and the like.

In combination with the foregoing possible implementation manner of thefirst aspect, in a second possible implementation manner of the firstaspect, before a terminal device determining a resource pooltransmitting a first signal according to a first numerology used totransmit the first signal, the method further includes:

the terminal device acquiring a corresponding relationship between atleast one resource pool and at least one numerology, wherein thecorresponding relationship is used to indicate that each numerology inthe at least one numerology corresponds to one or more resource pools,the at least one numerology includes the first numerology; wherein aterminal device determining a resource pool transmitting a first signalaccording to a first numerology used to transmit the first signalincludes: the terminal device determining the resource pool transmittingthe first signal in the at least one resource pool according to thefirst numerology used to transmit the first signal and the correspondingrelationship.

Optionally, the corresponding relationship between the at least oneresource pool and the at least one numerology may be that: one resourcepool in the at least one resource pool corresponds to one numerology, orone numerology may correspond to one or more resource pools, that is,different resource pools may correspond to the same numerology.

In combination with the foregoing possible implementation manners of thefirst aspect, in a third possible implementation manner of the firstaspect, the terminal device acquiring a corresponding relationshipbetween at least one resource pool and at least one numerology includes:the terminal device receiving first indication information sent by anetwork device, wherein the first indication information is used toindicate the corresponding relationship; the terminal device acquiringthe corresponding relationship between the at least one resource pooland the at least one numerology according to the first indicationinformation.

Optionally, the terminal device may receive the first indicationinformation sent by the network device through the user-specificsignaling, and the terminal device may also receive the first indicationinformation sent by the network device through the broadcast signaling,where the terminal device may receive the first indication informationsent by the network device through Downlink Control Information (DCI).Of course, the terminal device may also receive the first indicationinformation sent by the network device through other manners.

In combination with the foregoing possible implementation manners of thefirst aspect, in a fourth implementation manner of the first aspect, theterminal device determining the resource pool transmitting the firstsignal in the at least one resource pool according to the firstnumerology used to transmit the first signal and the correspondingrelationship includes: in the case where the corresponding relationshipindicates that a plurality of resource pools correspond to the firstnumerology, the terminal device determining a resource pool transmittingthe first signal in a plurality of resource pools.

In combination with the foregoing possible implementation manners of thefirst aspect, in a fifth implementation manner of the first aspect, theterminal device determining a resource pool in the plurality of resourcepools includes:

randomly selecting one resource pool among the plurality of resourcepools as a resource pool transmitting the first signal; or

the terminal device determining a resource pool index based on atransmission parameter of the terminal device, and determining aresource pool transmitting the first signal in the plurality of resourcepools according to the resource pool index; or

the terminal device selecting based on the load of the plurality ofresource pools, optionally, after performing load measurement to theplurality of resource pools, the terminal device selecting a resourcepool with a minimum load or with a load lower than a first threshold asa resource pool transmitting the first signal.

Specifically, if the terminal device determines a resource pool in theat least one resource pool, the first signal is transmitted by using theresource in the resource pool, and if the terminal device determines aplurality of resource pools in the at least one resource pool, theresource pool can be determined in the plurality of resource pools inthree ways. In the first way, one resource pool is arbitrarily selectedin the plurality of resource pools as the resource pool. In the secondway, the terminal device calculates the resource pool index according tothe transmission parameters. For example, the Radio Network TemporyIdentity (RNTI) or the access cell identifier of the terminal device isused to calculate the index of the resource pool, and the resource poolis determined in the plurality of resource pools according to theresource pool index. In the third way, the terminal device can performload measurement on the plurality of resource pools, and select theresource pool with the minimum load among the plurality of resourcepools as the resource pool. For example, the power of signals receivedin the plurality of resource pools can be measured, and the resourcepool with the smallest signal average receiving power is selected as theresource pool. If there is a plurality of resource pools with thesmallest signal average receiving power, one resource pool among theresource pools with the smallest average power may be arbitrarilyselected as the resource pool.

In combination with the foregoing possible implementation manners of thefirst aspect, in a sixth implementation manner of the first aspect,before the terminal device determining a resource pool transmitting thefirst signal in a plurality of resource pools, the method furtherincludes: the terminal device receiving second indication informationsent by the network device, wherein the second indication information isused to indicate a resource pool index used by the terminal device totransmit the first signal; wherein the terminal device determining aresource pool in the plurality of resource pools includes: the terminaldevice determining a resource pool transmitting the first signal in theplurality of resource pools according to a resource pool index indicatedby the second indication information.

In combination with the foregoing possible implementation manners of thefirst aspect, in a seventh implementation manner of the first aspect,before a terminal device determining a resource pool transmitting afirst signal according to a first numerology used to transmit the firstsignal, the method further includes: the terminal device determining thefirst numerology used to transmit the first signal.

In combination with the foregoing possible implementation manners of thefirst aspect, in an eighth implementation manner of the first aspect,the terminal device determining the first numerology used to transmitthe first signal includes at least one of the following: the terminaldevice determining the first numerology used to transmit the firstsignal according to a service type of the first signal; the terminaldevice determining the first numerology used to transmit the firstsignal according to a frequency band of the first signal; the terminaldevice determining the first numerology used to transmit the firstsignal according to a path loss parameter between the terminal deviceand the network device.

In combination with the foregoing possible implementation manners of thefirst aspect, in a ninth implementation manner of the first aspect, theterminal device determining the first numerology used to transmit thefirst signal includes: the terminal device receiving third indicationinformation sent by a network device, wherein the third indicationinformation is used to indicate that the first numerology is used totransmit the first signal; the terminal device determining the firstnumerology used to transmit the first signal according to the thirdindication information.

Specifically, the network device may send the third indicationinformation to the terminal device to indicate the first numerology usedby the terminal device to transmit the first signal. Optionally, theterminal device may receive the third indication information sent by thenetwork device through the user-specific signaling. The terminal devicemay also receive the third indication information sent by the networkdevice through the broadcast signaling. The terminal device may receivethe third indication information sent by the network device through theDownlink Control Information (DCI). Of course, the terminal device canalso receive the third indication information sent by the network devicethrough other manners.

In combination with the foregoing possible implementation manners of thefirst aspect, in a tenth implementation manner of the first aspect, theterminal device determining the first numerology used to transmit thefirst signal includes: the terminal device detecting a numerology of asecond signal other than the first signal, and determining thenumerology of the second signal to transmit the first signal. That is,the terminal device can detect the numerology used for signals otherthan the signals that need to be transmitted by itself, and thenumerology of other signals can be used as its first numerology.

In combination with the foregoing possible implementation manners of thefirst aspect, in an eleventh implementation manner of the first aspect,the terminal device using a transmission resource in the resource pooltransmitting the first signal to transmit the first signal includes:

the terminal device randomly selecting a transmission resource from atleast one transmission resource included in a resource pool transmittingthe first signal, to transmit the first signal; or

the terminal device determining a transmission resource index based on atransmission parameter of the terminal device, determining atransmission resource transmitting the first signal in at least onetransmission resource included in a resource pool transmitting the firstsignal according to the transmission resource index, and transmittingthe first signal on the transmission resource transmitting the firstsignal; or

the terminal device determining a transmission resource transmitting thefirst signal in at least one transmission resource included in aresource pool transmitting the first signal according to apre-configured transmission resource index, and transmitting the firstsignal on the transmission resource transmitting the first signal; or

the terminal device performing load measurement on at least onetransmission resource included in a resource pool transmitting the firstsignal, and selecting a transmission resource with a minimum load orwith a load lower than a second threshold, and transmitting the firstsignal on the transmission resource with the minimum load or with theload lower than the second threshold.

Specifically, the resource pool transmitting the first signal includesat least one transmission resource, and it may be performed in fourmanners to determine how to transmit the transmission resource of thefirst signal in the resource pool transmitting the first signal. In thefirst manner, one transmission resource is randomly selected among atleast one transmission resource included in the resource pool totransmit the first signal. In the second manner, a transmission resourceindex is calculated according to a transmission parameter of theterminal device. For example, the transmission parameter can calculate atransmission resource index for a wireless network temporary identifierof the terminal device or a cell identifier of the terminal device,determine, according to the transmission resource index, thetransmission resource transmitting the first signal in the at least onetransmission resource included in the resource pool. In the thirdmanner, the terminal device retains a pre-configured transmissionresource index, and the terminal device determines, according to thepre-configured transmission resource index, the resource transmittingthe first signal in the at least one transmission resource. In thefourth manner, the terminal device may measure the at least onetransmission resource included in the resource pool, select thetransmission resource with the minimum load as the resource transmittingthe signal. For example, the terminal device measures the signalreceiving power of each of the at least one transmission resource in theresource pool, and uses the transmission resource with the lowestaverage receiving power as the resource transmitting the first signal,and if there are multiple transmission resources with the lowest signalaverage receiving power, the first signal may be transmitted by any onetransmission resource arbitrarily selected from the plurality oftransmission resources.

In combination with the foregoing possible implementation manners of thefirst aspect, in a twelfth implementation manner of the first aspect,the resource pool includes at least one transmission resource, theresource pool may be a resource pool transmitting the first signal,and/or at least one resource pool included in the correspondingrelationship, each of the at least one transmission resource includes: aphysical time-frequency resource and/or a sequence resource. Thesequence resource may be a sequence in a sequence group, or may also becode words in a codebook, or may also be an interleaving pattern.Further, the transmission resources in each of at least one resourcepool are orthogonal to each other, and each resource pool in at leastone resource pool is orthogonal to each other, which may be orthogonalto each other in physical time-frequency resources, or may be orthogonalto each other in the sequence resources, or may be orthogonal to eachother both in physical time-frequency resources and in the sequenceresources.

In combination with the foregoing possible implementation manners of thefirst aspect, in the thirteenth implementation manner of the firstaspect, the first signal is a random access signal, a data signal or anuplink control signal.

A second aspect provides a signal transmission method, including: anetwork device sending first indication information to a terminaldevice, wherein the first indication information is used to indicate acorresponding relationship, and the corresponding relationship is usedto indicate each numerology in the at least one numerology correspondsto one or more resource pools.

In a first possible implementation manner of the second aspect, thenetwork device sends the second indication information to the terminaldevice, wherein the second indication information is used to indicatethe resource pool index used by the terminal device to transmit thefirst signal, so that the terminal device determines, in the pluralityof resource pools, a resource pool transmitting the first signalaccording to the resource pool index indicated by the second indicationinformation.

In combination with the foregoing possible implementation manners of thesecond aspect, in a second implementation manner of the second aspect,the network device sends third indication information to the terminaldevice, wherein the third indication information is used to indicatethat the first numerology is adopted to transmit the first signal, sothat the terminal device determines, according to the third indicationinformation, the first numerology used to transmit the first signal.

In a third aspect, there is provided a signal transmission apparatus,for performing the method of any of the above first aspect or any of thepossible implementations of the first aspect. In particular, theapparatus includes units for performing the method of the above firstaspect or any of the possible implementations of the first aspect.

In a fourth aspect, there is provided a signal transmission apparatus,for performing the method of any of the above second aspect or any ofthe possible implementations of the second aspect. In particular, theapparatus includes units for performing the method of the above secondaspect or any of the possible implementations of the second aspect.

In a fifth aspect, a signal transmission apparatus is provided,including: a receiver, a transmitter, a memory, a processor, and a bussystem. The receiver, the transmitter, the memory and the processor areconnected by the bus system. The memory is configured to storeinstructions. The processor is configured to execute instructions storedin the memory, to control the receiver to receive signals and controlthe transmitter to transmit signals. When the processor executesinstructions stored in the memory, the execution causes the processor toperform the method of the first aspect or any of possibleimplementations of the first aspect.

In a sixth aspect, a signal transmission apparatus is provided,including: a receiver, a transmitter, a memory, a processor, and a bussystem. The receiver, the transmitter, the memory and the processor areconnected by the bus system. The memory is configured to storeinstructions. The processor is configured to execute instructions storedin the memory, to control the receiver to receive signals and controlthe transmitter to transmit signals. When the processor executesinstructions stored in the memory, the execution causes the processor toperform the method of the second aspect or any of possibleimplementations of the second aspect.

In a seventh aspect, there is provided a computer readable medium forstoring a computer program, the computer program including instructionsfor performing the method of the first aspect or any of possibleimplementations of the first aspect.

In an eighth aspect, there is provided a computer readable medium forstoring a computer program, the computer program including instructionsfor performing the method of the second aspect or any of possibleimplementations of the second aspect.

Other features and advantages of the present disclosure will be apparentfrom the following detailed description, or be acquired in part by thepractice of the present disclosure.

It should be understood that the above general description and thefollowing detailed description are merely exemplary and explanatory, andare not limiting of the present disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate technical solutions of embodimentsof the present disclosure, the drawings to be used in the embodiments orthe prior art will be briefly described below. It is obvious that thedrawings in the following description are only some embodiments of thepresent disclosure. Those skilled in the art can also obtain otherdrawings based on these drawings without paying any creative work.

FIG. 1 is a schematic diagram of a signal transmission method accordingto an embodiment of the present disclosure.

FIG. 2 is a schematic block diagram of a signal transmission apparatusaccording to an embodiment of the present disclosure.

FIG. 3 is a schematic block diagram of a signal transmission apparatusaccording to another embodiment of the present disclosure.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present disclosurewill be clearly and completely described in the following with referenceto the accompanying drawings in the embodiments of the presentdisclosure. It is obvious that the described embodiments are a part ofthe embodiments of the present disclosure, but not all of theembodiments. All other embodiments obtained by those skilled in the artbased on the embodiments of the present disclosure without creativeefforts are within the scope of the present disclosure.

It should be understood that the technical solutions of the embodimentsof the present disclosure can be applied to various communicationsystems, for example, the Global System of Mobile communication (“GSM”)system, Code Division Multiple Access (“CDMA”) system, Wideband CodeDivision Multiple Access (“WCDMA”) system, General Packet Radio Service(“GPRS”), Long Term Evolution (“LTE”) system, LTE Frequency DivisionDuplex (“FDD”) system, LTE Time Division Duplex (“TDD”), UniversalMobile Telecommunication System (“UMTS”) or Worldwide Interoperabilityfor Microwave Access (“WiMAX”) communication system, and communicationsystems that may appear in the future.

It should be further understood that, in the embodiment of the presentdisclosure, the terminal device may be referred to as User Equipment(“UE”), a terminal device, a Mobile Station (“MS”), a Mobile Terminal orterminal devices in a future 5G network, or the like. The terminaldevice can communicate with one or more core networks via a Radio AccessNetwork (“RAN”). For example, the terminal may be a mobile phone (orcalled as a “cellular” telephone) or a computer with a mobile terminal,or the like. For example, the terminal can also be a portable, pocket,handheld, computer built-in or in-vehicle mobile device that exchangesvoice and/or data with the wireless access network.

The network device can be used to communicate with the mobile device,and the network device may be a Base Transceiver Station (“BTS”) in theGlobal System of Mobile communication (“GSM”) or Code Division MultipleAccess (“CDMA”), or it may also be a NodeB(“NB”) in Wideband CodeDivision Multiple Access (“WCDMA”), or it may also be an EvolutionalNode B(“eNB” or “eNodeB”) in LTE, or a relay station or access point, oran in-vehicle device, a wearable device, and access network devices inthe future 5G network.

FIG. 1 shows a schematic flow chart of a signal transmission method 100according to an embodiment of the present disclosure. FIG. 1 shows stepsor operations of the signal transmission method, but these steps oroperations are merely examples. The embodiments of the presentdisclosure may also perform other operations or variations of theoperations of FIG. 1. The method 100 includes:

S110, a terminal device determining a resource pool transmitting a firstsignal according to a first numerology (numerology) used to transmit thefirst signal;

S120, the terminal device using a transmission resource in the resourcepool transmitting the first signal to transmit the first signal.

Optionally, in S110, the terminal device may determine, according to thecorresponding relationship between the numerology and the resource pool,a resource pool transmitting the first signal. Of course, the terminaldevice may also determine the resource pool transmitting the firstsignal according to a preset internal relationship or logicalrelationship between the numerology and the resource pool. Of course,the terminal device may also determine the resource pool transmittingthe first signal according to the first numerology through othermanners.

Therefore, the terminal device can obtain the corresponding resourcepool according to the first numerology, and then the terminal deviceuses the transmission resource in the resource pool to transmit thefirst signal. In this way, the terminal device can determine thecorresponding resource pool according to the numerology, which avoidsallocating a specific resource pool for the terminal device in the priorart. The terminal device may determine the resource pool correspondingto the first signal according to the first signal, which may alsoimprove the flexibility of the terminal device to select the resourcepool.

Further, different resource pools may be selected for different servicerequirements. For example, when the first signal is a first servicetype, the first resource pool is selected, and when the first signal isa second service type, the second resource pool is selected. In thisway, requirements of different services may be met.

Optionally, the first signal may be a random access signal, which maybe, for example, a Preamble signal or a Physical Random Access Channel(“PRACH”), or may be a data signal or an uplink control signal, forexample, Physical Uplink Control Channel (“PUCCH”) or Schedule Request,or the like, and the present disclosure is not limited thereto.

As an optional embodiment, before S110, the method 100 further includes:the terminal device acquiring a corresponding relationship between atleast one resource pool and at least one numerology, wherein thecorresponding relationship is used to indicate that each numerology inthe at least one numerology corresponds to one or more resource pools,the at least one numerology includes the first numerology; wherein S110includes: the terminal device determining the resource pool transmittingthe first signal in the at least one resource pool according to thefirst numerology used to transmit the first signal and the correspondingrelationship.

As an optional embodiment, the terminal device can obtain thecorresponding relationship between the at least one resource pool andthe at least one numerology through two manners. In the first manner,the network device sends first indication information to the device onthe terminal, wherein the first indication information is used toindicate the corresponding relationship. The terminal device receivesthe first indication information, and acquires a correspondingrelationship between the at least one resource pool and the at least onenumerology according to the first indication information. Specifically,the network device may send the first indication information throughuser-specific signaling or send the first indication information throughDCI. The terminal device receives the first indication informationthrough the user-specific signaling, or receives the first indicationinformation through the DCI. Of course, the network device may also sendthe first indication information to the terminal device in mannersspecified by other protocols, and the terminal device receives the firstindication information sent by the network device in a manner specifiedby the protocol, and the embodiment of the present disclosure is notlimited thereto. In the second manner, the terminal device may acquire acorresponding relationship between the at least one numerology and theat least one resource pool reserved locally. It should be understoodthat, the terminal device may acquire the corresponding relationshiponly once, and uses the corresponding relationship to determine theresource pool when determining the resource pool according to thenumerology adopted by the terminal device itself subsequently.

Optionally, the corresponding relationship between the at least oneresource pool and the at least one numerology may be that: one resourcepool in the at least one resource pool corresponds to one numerology, orone numerology may correspond to one or more resource pools, that is,different resource pools may correspond to the same numerology.

Optionally, the resource pool transmitting the first signal and/or eachresource pool in the at least one resource pool includes at least onetransmission resource, and/or the resource pool transmitting the firstsignal also includes at least one transmission resource. Each of the atleast one transmission resource includes: a physical time-frequencyresource and/or a sequence resource. The sequence resource may be asequence in a sequence group, or may also be code words in a codebook,or may also be an interleaving pattern. Further, the transmissionresources in each of at least one resource pool are orthogonal to eachother, and each resource pool in at least one resource pool isorthogonal to each other, which may be orthogonal to each other inphysical time-frequency resources, or may be orthogonal to each other inthe sequence resources, or may be orthogonal to each other both inphysical time-frequency resources and in the sequence resources.

It should be understood that, the corresponding relationship between theat least one resource pool and the at least one numerology may be that:one resource pool in the at least one resource pool corresponds to onenumerology, or one numerology may correspond to one or more resourcepools, that is, different resource pools may correspond to the samenumerology, and embodiments of the present disclosure are not limitedthereto.

It should also be understood that the first numerology and/or each ofthe at least one numerology mentioned in the embodiment of the presentdisclosure may include: a subcarrier spacing, an amount of subcarriersincluded in a system bandwidth, an amount of subcarriers included in aPhysical Resource Block PRB, a symbol length of Orthogonal FrequencyDivision Multiplexing OFDM, an amount of points of Fast FourierTransformation FFT or Inverse Fourier Transformation IFFT used togenerate OFDM signals, an amount of Orthogonal Frequency DivisionMultiplexing OFDM symbols included in a Transmission Time Interval TTI,an amount of TTIs included in a first time period, and a Cyclic PrefixCP type of the first signal, and a time length of the signal CP. Thesubcarrier spacing refers to a frequency interval of adjacentsubcarriers, for example, 15 kHz, 60 kHz, etc.; the number ofsubcarriers under a specific system bandwidth is, for example, thenumber of subcarriers corresponding to each possible system bandwidth;the number of subcarriers included in the PRB, for example, may betypically an integer multiple of 6 or 16; the number of OFDM symbolsincluded in the TTI may be, for example, typically an integer multipleof 2, 4, 7, or may also be an integer multiple of 14; the number of TTIsincluded in the first time period may refer to the number of TTIsincluded in the time length of 1 ms or 10 ms; the CP type of the firstsignal may be that a cyclic prefix uses a regular CP or an extended CP;the time length of CP of the first signal.

Optionally, the numerology may further include: a basic parameter in anewly defined resource partitioning manner in a future network system,which may be, for example, a basic frequency domain unit, a basicfrequency domain unit pattern, a subcarrier pattern, an occupiedposition of a reference symbol in a time domain unit, a TTI pattern inthe unit period, a pattern of the subframe in the frame, a pattern ofthe slot in the subframe, an OFDM pattern in the slot, and the like.

As an optional embodiment, before S110, the method 100 further includes:the terminal device determining the first numerology used to transmitthe first signal. The terminal device may determine the first numerologyused to transmit signals in following five manners.

In a first manner, the terminal device determines the first numerologyused to transmit the first signal according to a service type of thefirst signal. For example, the network device and the terminal devicemay pre-appoint that the first service type adopts the numerology 1, andthe second service type adopts the numerology 2. When the first signalbelongs to the first service type, the terminal device determines thatthe first numerology is the numerology 1. When the first signal belongsto the second service type, the terminal device determines that thefirst numerology is the numerology 2.

In a second manner, the terminal device determines the first numerologyused to transmit the first signal according to a frequency bandtransmitting the first signal. For example, the terminal device and thenetwork device pre-appoint that the first working frequency bandcorresponds to the numerology 3, and the second working frequency bandcorresponds to the numerology 4. When the terminal device transmits thefirst signal on the first working frequency band, the terminal devicedetermines that the first numerology is the numerology 3. When theterminal device transmits the first signal on the second workingfrequency band, the terminal device determines that the first numerologyis the numerology 4.

In a third manner, the terminal device determines the first numerologyused to transmit the first signal according to a path loss parameterbetween the terminal device and the network device. For example, theterminal device and the network device pre-appoint that: when the pathloss parameter is greater than a first threshold, the numerology 5 isselected. When the path loss parameter is smaller than the firstthreshold, the numerology 6 is selected. The terminal device determineswhether to select the numerology 5 or the numerology 6 as the firstnumerology according to the path loss parameter between the terminaldevice and the network device.

In a fourth mode, the network device sends third indication informationto the terminal device, the terminal device receives the thirdindication information sent by a network device, wherein the thirdindication information is used to indicate that the first numerology isused to transmit the first signal; the terminal device determines thefirst numerology used to transmit the first signal according to thethird indication information. Optionally, the network device may sendthe third indication information to the terminal device throughuser-specific signaling, and the terminal device may receive the thirdindication information sent by the network device through theuser-specific signaling. The network device may send the thirdindication through broadcast signaling, and the terminal device may alsoreceive the third indication information sent by the network devicethrough the broadcast signaling. The network device sends the thirdindication information to the terminal device by using the DCI, and theterminal device may receive the third indication information sent by thenetwork device by using the DCI. Of course, the network device may sendthe third indication information to the terminal device through othermanners, and the terminal device may also receive the third indicationinformation sent by the network device through other methods, and theembodiment of the present disclosure is not limited thereto.

In a fifth mode, the terminal device detects a second signal other thanthe first signal, and determines a numerology used to transmit thesecond signal as a first numerology used to transmit the first signal.That is, the terminal device can detect the numerology used for signalsother than the signals that need to be transmitted by itself, and thenumerology of other signals can be used as its first numerology.

As an optional embodiment, the terminal device determines, according tothe corresponding relationship, that the resource pool transmitting thefirst signal in the at least one resource pool may be one or more. Whenthe terminal device determines there is one resource pool, the firstsignal is transmitted on the transmission resource of the resource pool.The terminal device determining the resource pool transmitting the firstsignal in the at least one resource pool according to the firstnumerology used to transmit the first signal and the correspondingrelationship includes: in the case where the corresponding relationshipindicates that a plurality of resource pools correspond to the firstnumerology, the terminal device determining a resource pool transmittingthe first signal in a plurality of resource pools. When the terminaldevice determines that there is a plurality of resource pools, theresource pool transmitting the first signal may be determined in thefollowing four manners.

In a first manner, the terminal device randomly selects one resourcepool among the plurality of resource pools as a resource pooltransmitting the first signal, wherein M is an integer greater than orequal to 2 and less than or equal to N.

In a second manner, the terminal device determines a resource pool indexbased on a radio network temporary identifier of the terminal device ora cell identifier of the terminal device, and determines a resource pooltransmitting the first signal in a plurality of resource pools accordingto the resource pool index.

In a third manner, after performing load measurement to the plurality ofresource pools, the terminal device selects a resource pool with aminimum load or with a load lower than a first threshold as a resourcepool transmitting the first signal. For example, the power of signalsreceived in the plurality of resource pools can be measured, and theresource pool with the smallest signal average receiving power isselected as the resource pool. If there is a plurality of resource poolswith the smallest signal average receiving power, one resource poolamong the resource pools with the smallest signal average receivingpower may be arbitrarily selected as the resource pool. Of course,further conditions can also be set to select the resource pool in aplurality of resource pools. It is also possible to select a resourcepool among resource pools in which the signal average receiving power isless than the set first threshold, or the like, and embodiment of thepresent disclosure is not limited thereto.

In a fourth manner, before the terminal device determining a resourcepool transmitting the first signal in a plurality of resource pools, themethod 100 further includes: the terminal device receiving secondindication information sent by the network device, wherein the secondindication information is used to indicate a resource pool index used bythe terminal device to transmit the first signal; wherein the terminaldevice determining a resource pool in the plurality of resource poolsincludes: the terminal device determining a resource pool transmittingthe first signal in the plurality of resource pools according to aresource pool index indicated by the second indication information.

Specifically, in S120, as for the case the terminal device transmits thefirst signal by using a transmission resource transmitting the firstsignal in a resource pool, it may be that the transmission resourcetransmitting the first signal is firstly determined in the at least onetransmission resource included in the resource pool, and then the firstsignal is transmitted. If the resource pool includes only onetransmission resource, the terminal device can transmit the first signalon the one transmission resource, and if the resource pool includes aplurality of transmission resources, the resource transmitting the firstsignal needs to be further selected among the plurality of transmissionresources. Specifically, there may be following four manners todetermine the transmission resource transmitting the first signal in theat least one transmission resource included in the resource pool.

In a first manner, the terminal device randomly selects a transmissionresource from at least one transmission resource included in a resourcepool transmitting the first signal, to transmit the first signal.

In a second manner, the terminal device determines a transmissionresource index based on a radio network temporary identifier of theterminal device or a cell identifier of the terminal device, determinesa transmission resource transmitting the first signal in the at leastone transmission resource included in the resource pool transmitting thefirst signal according to the transmission resource index, and transmitsthe first signal on a transmission resource transmitting the firstsignal.

In a third manner, the terminal device retains a pre-configuredtransmission resource index, and the terminal device determines,according to the pre-configured transmission resource index, thetransmission resource transmitting the first signal in the at least onetransmission resource included in the resource pool transmitting thefirst signal, and transmits the first signal on a resource transmittingthe first signal.

In a fourth manner, the terminal device performs load measurement on atleast one transmission resource included in a resource pool transmittingthe first signal, and selects a transmission resource with a minimumload or with a load lower than a second threshold, and transmits thefirst signal on the transmission resource with the minimum load or withthe load lower than the second threshold. For example, the terminaldevice measures the signal receiving power of each of the at least onetransmission resource in the resource pool, and uses the transmissionresource with the lowest average receiving power as the resourcetransmitting the first signal, and if there are multiple transmissionresources with the lowest signal average receiving power, the firstsignal may be transmitted by any one transmission resource arbitrarilyselected from the plurality of transmission resources. Of course, anyone of the transmission resources whose signal average receiving poweris less than the preset threshold may be selected as the resourcetransmitting the first signal.

Therefore, in the signal transmission method according to the embodimentof the present disclosure, the terminal device determines, according tothe corresponding relationship between the resource pool and thenumerology, the resource pool corresponding to the first numerology ofthe terminal device, and uses the transmission resource in the resourcepool to transmit the first signal, which prevents a specific resourcepool from being allocated to a terminal device in the prior art. In thisembodiment of the present disclosure, a terminal device may select aresource pool according to a signal. For example, a first numerologytransmitting the signal may be selected according to a frequency band ofa transmission signal and a service type of a signal, and then theresource pool transmitting the first signal is determined according tothe corresponding relationship, which can meet the requirement of theresource pool by the terminal device, and improve the flexibility of theterminal device to select the resource pool.

For ease of understanding, following two specific examples are given,but are not intended to limit the embodiments of the present disclosure.In the first example, the terminal device acquires the correspondingrelationship through Radio Resource Control (“RRC”) signaling, and thenumerology is the subcarrier spacing, which specifically includesfollowing steps.

In the first step, the network device sends the RRC signaling to theterminal device, where the RRC signaling carries first indicationinformation. For example, the first indication information indicates Nresource pools corresponding to N different subcarrier spacings.Specifically, the first indication information may indicate: a frequencydomain start location and an end location of each resource pool of the Nresource pools, subframes included in each of the resource pools, eachresource pool including at least one time-frequency resource, and eachsubcarrier corresponding to one resource pool. Of course, eachsubcarrier can correspond to a plurality of resource pools. For specificconvenience, it is assumed herein that each subcarrier corresponds toone resource pool.

In the second step, after receiving the first indication informationsent by the network device through the RRC signaling, the terminaldevice determines the subcarrier spacing used to send thecontention-based random access signal according to the service type ofthe data to be currently transmitted.

In a third step, the terminal device determines the target resource pooltransmitting the data to be currently transmitted in the N resourcepools, according to the subcarrier spacing and the first indicationinformation.

In a fourth step, the terminal device arbitrarily selects one physicaltime-frequency resource in the at least one physical time-frequencyresource included in the target resource pool, to perform thetransmission of random access signals.

In the second example, the terminal device acquires the correspondingrelationship through the broadcast signaling, and the numerology is acyclic prefix type, which specifically includes following steps.

In a first step, the network device broadcasts signaling to the terminaldevice, where the broadcast signaling carries first indicationinformation, the first indication information indicates N resource poolsand a cyclic prefix type corresponding to the N resource pools.Specifically, the first indication information may indicate: a startlocation and an end location of the frequency domain resource, subframesincluded in each resource pool, each resource pool including at leastone transmission resource, and each transmission resource including atime-frequency resource and a sequence resource, sequence resourcesincluded in each resource pool.

In a second step, after receiving the broadcast signaling broadcast bythe network device, the terminal device determines the cyclic prefixtype used to send the data signal after acquiring the first indicationinformation in the broadcast signaling.

In a third step, the terminal device determines, in the N resourcepools, two resource pools corresponding to the cyclic prefix typesending the data signal.

In a fourth step, the terminal device determines the resource pool indexaccording to the RRC signaling received in advance, and determines atarget resource pool in the two resource pools according to the resourcepool index.

In a fifth step, the terminal device calculates an index of thetransmission resource according to the RNTI, and determines, accordingto the index of the transmission resource, the resource transmitting thedata signal in the at least one transmission resource included in thetarget resource pool, where the terminal device transmits the datasignal on the time-frequency resource and the sequence resource includedin the transmission resource.

The signal transmission method according to an embodiment of the presentdisclosure is described above with reference to FIG. 1, and the signaltransmission apparatus in the embodiment of the present disclosure willbe described below with reference to FIGS. 2 and 3.

FIG. 2 is a schematic diagram of a signal transmission apparatus 200according to an embodiment of the present disclosure. The apparatus maybe, for example, a terminal device in the method 100, and the apparatus200 includes:

a determining module 210, configured to determine a resource pooltransmitting a first signal according to a first numerology used totransmit the first signal;

a transmitting module 220, configured to transmit the first signal byusing a transmission resource in the resource pool transmitting thefirst signal.

As an optional embodiment, the apparatus 200 further includes: anacquiring module, configured to acquire a corresponding relationshipbetween at least one resource pool and at least one numerology before aresource pool transmitting a first signal is determined according to afirst numerology used to transmit the first signal, wherein thecorresponding relationship is used to indicate that each numerology inthe at least one numerology corresponds to one or more resource pools,the at least one numerology includes the first numerology; thedetermining module 210 is further configured to: determine the resourcepool transmitting the first signal in the at least one resource poolaccording to the first numerology used to transmit the first signal andthe corresponding relationship.

As an optional embodiment, the acquiring module is configured to:receive first indication information sent by a network device, whereinthe first indication information is used to indicate the correspondingrelationship; acquire the corresponding relationship between the atleast one resource pool and the at least one numerology according to thefirst indication information.

As an optional embodiment, the determining module 210 is configured to:in the case where the corresponding relationship indicates that aplurality of resource pools correspond to the first numerology,determine a resource pool transmitting the first signal in a pluralityof resource pools.

As an optional embodiment, the determining module 210 is furtherconfigured to: randomly select one resource pool among the plurality ofresource pools as a resource pool transmitting the first signal; or

determine a resource pool index based on a transmission parameter of theapparatus, and determine a resource pool transmitting the first signalin the plurality of resource pools according to the resource pool index;or

after load measurement to the plurality of resource pools is performed,select a resource pool with a minimum load or with a load lower than afirst threshold as a resource pool transmitting the first signal.

As an optional embodiment, the apparatus 200 further includes: areceiving module, configured to receive second indication informationsent by the network device before a resource pool transmitting the firstsignal is determined in a plurality of resource pools, wherein thesecond indication information is used to indicate a resource pool indexused by the apparatus to transmit the first signal; the determiningmodule 210 is further configured to: determine a resource pooltransmitting the first signal in the plurality of resource poolsaccording to a resource pool index indicated by the second indicationinformation.

As an optional embodiment, the determining module 220 is furtherconfigured to: determine the first numerology used to transmit the firstsignal before a resource pool transmitting a first signal is determinedaccording to a first numerology used to transmit the first signal.

As an optional embodiment, the determining module 210 is furtherconfigured to: determine the first numerology used to transmit the firstsignal according to at least one of a service type, a frequency band,and a path loss parameter of the first signal.

As an optional embodiment, the determining module 210 is furtherconfigured to: receive third indication information sent by a networkdevice, wherein the third indication information is used to indicatethat the first numerology is used to transmit the first signal;determine the first numerology used to transmit the first signalaccording to the third indication information.

As an optional embodiment, the determining module 210 is furtherconfigured to: detect a second signal other than the first signal, anddetermine a numerology used to transmit the second signal as a firstnumerology used to transmit the first signal.

As an optional embodiment, the transmitting module 220 is furtherconfigured to:

randomly select a transmission resource from at least one transmissionresource included in a resource pool transmitting the first signal, totransmit the first signal; or

determine a transmission resource index based on a transmissionparameter of the apparatus, determine a transmission resourcetransmitting the first signal in at least one transmission resourceincluded in a resource pool transmitting the first signal according tothe transmission resource index, and transmit the first signal on thetransmission resource transmitting the first signal; or

determine a transmission resource transmitting the first signal in atleast one transmission resource included in a resource pool transmittingthe first signal according to a pre-configured transmission resourceindex, and transmit the first signal on the transmission resourcetransmitting the first signal; or

perform load measurement on at least one transmission resource includedin a resource pool transmitting the first signal, and select atransmission resource with a minimum load or with a load lower than asecond threshold, and transmit the first signal on the transmissionresource with the minimum load or with the load lower than the secondthreshold.

As an optional embodiment, the resource pool includes at least onetransmission resource, each of the at least one transmission resourceincludes: a physical time-frequency resource and/or a sequence resource.

As an optional embodiment, the numerology includes at least one of: asubcarrier spacing, an amount of subcarriers included in a systembandwidth, an amount of subcarriers included in a Physical ResourceBlock PRB, a symbol length of Orthogonal Frequency Division MultiplexingOFDM, an amount of points of Fast Fourier Transformation FFT or InverseFourier Transformation IFFT used to generate OFDM signals, an amount ofOrthogonal Frequency Division Multiplexing OFDM symbols included in aTransmission Time Interval TTI, an amount of TTIs included in a firsttime period, and a Cyclic Prefix CP type of the first signal, and a timelength of the signal CP.

As an optional embodiment, the first signal is a random access signal, adata signal or an uplink control signal.

It should be understood that the apparatus 200 herein is embodied in theform of a functional module. The term “module” as used herein may referto an application specific integrated circuit (ASIC), an electroniccircuit, a processor (e.g., a shared processor, a proprietary processor,or a group processor, etc.) for executing one or more software orfirmware programs, and a memory, a merge logic circuit, and/or othersuitable components that support the functions described. In an optionalexample, those skilled in the art may understand that the apparatus 200may be embodied as the terminal device in the foregoing embodiment, andthe apparatus 200 may be used to perform various processes and/or stepscorresponding to the terminal device in the foregoing method 100embodiments. To avoid repetition, it will not be repeated herein.

FIG. 3 shows a signal transmission apparatus 300 according to anembodiment of the present disclosure. For example, the apparatus 300 canbe a terminal device in the method 100, the apparatus 300 includes atransceiver 310, a processor 320, a memory 330, and a bus system 340.The transceiver 310, the processor 320 and the memory 330 are connectedby a bus system 340. The memory 330 is used for storing instructions.The processor 320 is used for executing instructions stored in thememory 330, to control the transceiver 310 to send or receive signals.

The processor 320 is configured to determine a resource pooltransmitting a first signal according to a first numerology used totransmit the first signal; the transceiver 310 is configured to transmitthe first signal to transmit the first signal by using a transmissionresource in the resource pool.

As an optional embodiment, the transceiver 310 is further configured toacquire a corresponding relationship between at least one resource pooland at least one numerology before a resource pool transmitting a firstsignal is determined according to a first numerology used to transmitthe first signal, wherein the corresponding relationship is used toindicate that each numerology in the at least one numerology correspondsto one or more resource pools, the at least one numerology includes thefirst numerology; the processor 320 is further configured to: determinethe resource pool transmitting the first signal in the at least oneresource pool according to the first numerology used to transmit thefirst signal and the corresponding relationship.

As an optional embodiment, the transceiver 310 is further configured to:receive first indication information sent by a network device, whereinthe first indication information is used to indicate the correspondingrelationship; acquire the corresponding relationship between the atleast one resource pool and the at least one numerology according to thefirst indication information.

As an optional embodiment, the processor 320 is configured to: in thecase where the corresponding relationship indicates that a plurality ofresource pools correspond to the first numerology, determine a resourcepool transmitting the first signal in a plurality of resource pools.

As an optional embodiment, the processor 320 is configured to: randomlyselect one resource pool among the plurality of resource pools as aresource pool transmitting the first signal; or

determine a resource pool index based on a transmission parameter of theapparatus, and determine a resource pool transmitting the first signalin the plurality of resource pools according to the resource pool index;or

after load measurement to the plurality of resource pools is performed,select a resource pool with a minimum load or with a load lower than afirst threshold as a resource pool transmitting the first signal.

As an optional embodiment, the transceiver 310 is further configured toreceive second indication information sent by the network device beforea resource pool transmitting the first signal is determined in aplurality of resource pools, wherein the second indication informationis used to indicate a resource pool index used by the apparatus totransmit the first signal; the processor 320 is further configured to:determine a resource pool transmitting the first signal in the pluralityof resource pools according to a resource pool index indicated by thesecond indication information.

As an optional embodiment, the processor 320 is further configured to:determine the first numerology used to transmit the first signal beforea resource pool transmitting a first signal is determined according to afirst numerology used to transmit the first signal.

As an optional embodiment, the processor 320 is further configured to:determine the first numerology used to transmit the first signalaccording to at least one of a service type, a frequency band, and apath loss parameter of the first signal.

As an optional embodiment, the processor 320 is further configured to:receive third indication information sent by a network device, whereinthe third indication information is used to indicate that the firstnumerology is used to transmit the first signal; determine the firstnumerology used to transmit the first signal according to the thirdindication information.

As an optional embodiment, the processor 320 is further configured to:detect a second signal other than the first signal, and determine anumerology used to transmit the second signal as a first numerology usedto transmit the first signal.

As an optional embodiment, the transceiver 310 is configured to:

randomly select a transmission resource from at least one transmissionresource included in a resource pool transmitting the first signal, totransmit the first signal; or

determine a transmission resource index based on a transmissionparameter of the apparatus, determine a transmission resourcetransmitting the first signal in at least one transmission resourceincluded in a resource pool transmitting the first signal according tothe transmission resource index, and transmit the first signal on thetransmission resource transmitting the first signal; or

determine a transmission resource transmitting the first signal in atleast one transmission resource included in a resource pool transmittingthe first signal according to a pre-configured transmission resourceindex, and transmit the first signal on the transmission resourcetransmitting the first signal; or

perform load measurement on at least one transmission resource includedin a resource pool transmitting the first signal, and select atransmission resource with a minimum load or with a load lower than asecond threshold, and transmit the first signal on the transmissionresource with the minimum load or with the load lower than the secondthreshold.

As an optional embodiment, the resource pool includes at least onetransmission resource, each of the at least one transmission resourceincludes: a physical time-frequency resource and/or a sequence resource.

As an optional embodiment, the numerology includes at least one of: asubcarrier spacing, an amount of subcarriers included in a systembandwidth, an amount of subcarriers included in a Physical ResourceBlock PRB, a symbol length of Orthogonal Frequency Division MultiplexingOFDM, an amount of points of Fast Fourier Transformation FFT or InverseFourier Transformation IFFT used to generate OFDM signals, an amount ofOrthogonal Frequency Division Multiplexing OFDM symbols included in aTransmission Time Interval TTI, an amount of TTIs included in a firsttime period, and a Cyclic Prefix CP type of the first signal, and a timelength of the signal CP.

As an optional embodiment, the first signal is a random access signal, adata signal or an uplink control signal.

It should be understood that the apparatus 300 may be specifically theterminal device in the foregoing embodiment, and may be used to performvarious steps and/or processes corresponding to the terminal device inthe foregoing method embodiments. Optionally, the memory 340 can includeread only memory and random access memory and provide instructions anddata to the processor. A portion of the memory may also include anon-volatile random access memory. For example, the memory can alsostore information of the device type. The processor 320 can beconfigured to execute instructions stored in the memory, and when theprocessor executes the instructions, the processor can perform thevarious steps corresponding to the terminal device in theabove-described method 100 embodiment.

It should be understood that, in the embodiment of the presentdisclosure, the processor 320 may be a central processing unit (CPU),and the processor may also be other general purpose processors, digitalsignal processors (DSPs), and application specific integrated circuits(ASICs), Field Programmable Gate Arrays (FPGAs) or other programmablelogic devices, discrete gates or transistor logic devices, discretehardware components, etc. The general purpose processor may be amicroprocessor or the processor may also be any conventional processoror the like.

It should be understood that, the term “and/or” in this context ismerely an association describing the associated objects, indicating thatthere may be three relationships, for example, A and/or B, which mayindicate that A exists separately, both A and B exist, and B existsseparately. In addition, the character “/” herein generally indicates an“or” relationship of contextual objects.

It should be understood that, in various embodiments of the presentdisclosure, the sequence numbers of the above processes do not mean theorder of execution, and the order of execution of each process should bedetermined by its function and internal logic, and should not be takento constitute any limitation to the implementation process ofembodiments of the present disclosure.

Those of ordinary skill in the art will appreciate that the units andalgorithm steps of the various examples described in connection with theembodiments disclosed herein can be implemented in electronic hardwareor a combination of computer software and electronic hardware. Whetherthese functions are performed in hardware or software depends on thespecific application and design constraints of the technical solution. Aperson skilled in the art can use different methods for implementing thedescribed functions for each particular application, but suchimplementation should not be considered to go beyond the scope of thepresent disclosure.

A person skilled in the art can clearly understand that for theconvenience and brevity of the description, the specific working processof the system, the device and the unit described above can refer to thecorresponding process in the foregoing method embodiment, and detailsare not described herein again.

In the several embodiments provided by the present disclosure, it shouldbe understood that the disclosed systems, apparatuses, and methods maybe implemented in other manners. For example, the apparatus embodimentsdescribed above are merely illustrative. For example, the division ofthe unit is only a logical function division. In actual implementation,there may be another division manner. For example, a plurality of unitsor components may be combined or integrated into another system, or somefeatures can be ignored or not executed. In addition, the coupling ordirect coupling or communication connection shown or discussed may be anindirect coupling or communication connection through some interfaces,apparatuses or units, which may be electrical, mechanical or otherwise.

The units described as separate components may or may not be physicallyseparated, and the components displayed as units may or may not bephysical units. That is, they may be located in one place, or may bedistributed to multiple network units. Some or all of the units may beselected according to actual needs to achieve the purpose of thetechnical solution of the embodiment.

In addition, each functional unit in each embodiment of the presentdisclosure may be integrated into one processing unit, or each unit mayexist physically separately, or two or more units may be integrated intoone unit.

The functions may be stored in a computer readable storage medium ifimplemented in the form of a software functional unit and sold or usedas a standalone product. Based on such understanding, the technicalsolution of the present disclosure which is essential or a partcontributes to the prior art, or a part of the technical solution, maybe embodied in the form of a software product, which is stored in astorage medium, including instructions to cause a computer device (whichmay be a personal computer, server, or network device, etc.) to performall or part of the steps of the methods described in various embodimentsof the present disclosure. The foregoing storage medium includes: a Udisk, a mobile hard disk, a Read-Only Memory (“ROM”), a Random AccessMemory (“RAM”), a disk, or an optical disk or other media that can storeprogram codes.

The above is only the specific embodiment of the present disclosure, butthe scope of the present disclosure is not limited thereto, and anyperson skilled in the art can easily think of changes or substitutionswithin the technical scope of the present disclosure and they should becovered by the scope of the present disclosure. Therefore, the scope ofthe disclosure should be determined by the scope of the claims.

What is claimed is:
 1. A signal transmission method, comprising:determining, by a terminal device, a resource pool for transmitting afirst signal according to a first subcarrier spacing used to transmit afirst signal at a working frequency band; transmitting, by the terminaldevice, the first signal using a transmission resource in the resourcepool.
 2. The method according to claim 1, comprising: determining, bythe terminal device, the working frequency band.
 3. The method accordingto claim 2, comprising: determining, by the terminal device, the firstsubcarrier spacing of the resource pool according to the workingfrequency band.
 4. The method according to claim 1, comprising:determining, by the terminal device, the first subcarrier spacing of theresource pool according to the working frequency band.
 5. The methodaccording to claim 1, wherein the first subcarrier spacing comprising atleast one of 15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz.
 6. The methodaccording to claim 1, comprising: receiving, by the terminal device, anindication information sent by a network device; wherein the indicationinformation is configured to indicate that the first subcarrier spacingis used to transmit the first signal.
 7. The method according to claim6, further comprising: determining, by the terminal device, the firstsubcarrier spacing used to transmit the first signal according to theindication information.
 8. The method according to claim 6, furthercomprising: receiving, by the terminal device, an indication informationsent by a network device; wherein the indication information indicatesthat the first subcarrier spacing is used to transmit the first signal.9. The method according to claim 1, wherein the resource pool comprisesat least one transmission resource, each of the at least onetransmission resource comprises: a physical time-frequency resource. 10.The method according to claim 1, further comprising: acquiring, by theterminal device, a corresponding relationship between the firstsubcarrier spacing and the resource pool at a working frequency band.11. The method according to claim 10, comprising: determining, by theterminal device, the resource pool according to the first subcarrierspacing used to transmit the first signal and the correspondingrelationship at a working frequency band.
 12. A signal transmissionmethod, comprising: transmitting, by a network device, an indicationinformation to indication a terminal device to determine a resource poolfor transmitting a first signal according to a first subcarrier spacingused to transmit a first signal at a working frequency band; receivingfrom the terminal device, by the network device, the first signaltransmitted on a transmission resource in the resource pool.
 13. Themethod according to claim 12, wherein the working frequency band isdetermined by the terminal device.
 14. The method according to claim 12,wherein the first subcarrier spacing of the resource pool is determinedaccording to the working frequency band.
 15. The method according toclaim 12, wherein the first subcarrier spacing is 15*2{circumflex over( )}k, wherein k is an integer equal to or bigger than zero.
 16. Themethod according to claim 12, wherein the resource pool comprises atleast one transmission resource, each of the at least one transmissionresource comprises: a physical time-frequency resource.
 17. A networkdevice, comprising at least one processor; and at least one memoryincluding program code; the at least one memory and the program codeconfigured to, with the at least one processor, cause the network deviceto perform the following: transmit, by a network device, an indicationinformation to indication a terminal device to determine a resource poolfor transmitting a first signal according to a first subcarrier spacingused to transmit a first signal at a working frequency band; receivefrom the terminal device, by the network device, the first signaltransmitted on a transmission resource in the resource pool.
 18. Thenetwork device according to claim 17, wherein the working frequency bandis determined by the terminal device.
 19. The network device accordingto claim 17, wherein the first subcarrier spacing of the resource poolis determined according to the working frequency band.
 20. The networkdevice according to claim 17, wherein the resource pool comprises atleast one transmission resource, each of the at least one transmissionresource comprises: a physical time-frequency resource.